Free Shipping On Orders Over $75. Details

Talk to a Sierra Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
$5,000 Giveaway! 5 Chances to Win! Enter Daily >

AFE MACH Force XP 3-Inch Dual Exhaust System with Black Tips; Side Exit (14-18 4.3L Sierra 1500)

Item S501138
Call a Sierra Enthusiast at 1-888-706-1096
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Market Price $1,301.99 You Save 12% ($149.99)
Our Price

$1,152.00 (kit)

FREE Shipping

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    or use

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Cat-Back Exhaust
      • T-409 Stainless Steel Construction
      • 3 in. Mandrel-Bent Tubing
      • Black 4.5 in. Stainless Steel Exhaust Tips
      • Exits Behind Each Rear Tire
      • 2-Year Warranty
      • Fits 2014-2018 4.3L GMC Sierras
      • Designed to fit Regular Cab Models Only


      Effective Exhaust. Getting into the thick of the action with +14 horses and +17 torque ft/lbs energizing your 2014-2018 GMC Sierra is as easy as bolting on the aFe Mach Force XP 3-inch Split Side Exit Cat-Back Exhaust with Black Tips. These dyno-tested and proven power gains come from the 29% boost to exhaust flow that the Mach Force XP generates. Removing the hot backup of fumes lets cold, fresh, oxygen-rich air into the engine, boosting power, throttle response, and even engine life (by cutting heat stress). Performance rises across the entire RPM band. This aFe Cat-Back looks great- with its aggressive black tips and polished, contrasting aFe logo - and creates a deep, belligerent exhaust note.

      Reliable Stainless. Stainless steel is the material used for the 3” tubing, the straight-through high-flow muffler, and the black powder-coated 4.5" tips on the aFe Mach Force Cat-Back, to keep rust and corrosion at bay. The system bolts on with hand tools, with no cutting or welding required, and comes with stability generating bayonet hangers, hardware, and an extension tube for long bed variants. aFe warrants the exhaust system for 2 years, though its tough USA-made stainless build usually lasts much longer.

      Application. The aFe Mach Force XP 3-inch Split Side Exit Cat-Back Exhaust with Black Tips is a system that fits the 2014-2018 GMC Sierras with the following cab and box configurations.
      • Regular Cab with the Standard Box
      • Regular Cab with the Short Box

      Shop All Truck Parts And Accessories

      Shop All Truck Exhaust

      Fitment: 2014 2015 2016 2017 2018 Details

      AFE 49-44071-B

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Cat-Back Exhaust System
      • Hardware

      Tech Specs


      Customer Reviews (68)

        Questions & Answers

        10 More Questions

        Will It Fit My Sierra 1500

        • 4.3L V6 - 14, 15, 16, 17, 18

        Designed to fit Regular Cab Models Only.

            Related Sierra 1500 Categories